JPH11155264A - Apparatus and method for assembling disk-shaped insulator provided in armature of rotating electric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily form an outer insulator 5 on an outer diameter of a coil projection 7c without causing cracks, chips, or the like in the outer insulator 5 or deformation of a coil projection 7c. To provide a disk-shaped insulator assembling apparatus 11 that can be inserted into a device. SOLUTION: After assembling a lower layer coil conductor on an armature core 3, the armature core 3 is held at a center 12, and a coil guide 13 is moved in an axial direction to fit a coil protrusion 7c into a guide groove 13a. Let it. Next, one end of the coil side 7a is pressed by the diameter-reducing claw 15 to reduce the diameter of the one coil protrusion 7c. Next, one pusher 14 is pushed out, and a round hole of the outer insulator is inserted into the outer periphery of the group of coil protrusions 7c. Thereafter, the diameter reducing claw 15 is moved radially outward to release the pressing force applied to the coil side 7a. As a result, one of the coil protrusions 7c expands radially outward and fits into the fitting groove of the outer insulator 5A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method and an apparatus for assembling a disk-shaped insulator provided in an armature of a rotating electric machine.

[0002]

2. Description of the Related Art As a prior art, Japanese Patent Application No. 7-32698 is filed.
No. 3 entitled "Method of Manufacturing Rotor of Rotating Electric Machine". As shown in FIG. 6, the rotor described in this prior application is constructed by assembling a predetermined number of lower coil conductors 7 and upper coil conductors 8 on an armature core 3 and coil end portions of each lower coil conductor 7. 7b and the coil end 7b of each lower-layer coil conductor 7 and the coil end 8b of each upper-layer coil conductor 8 and a disk-shaped insulator (inside insulation). A body 4 and an outer insulator 5) are incorporated. As an assembling method, first, the hollow portion of the inner insulator 4 is passed through the rotating shaft 2 and the inner insulator 4 is mounted on the end surface of the armature core 3, and then a predetermined number of lower coil conductors 7 are assembled to the armature core 3. . Subsequently, the hollow portion of the outer insulator 5 is inserted into the outer diameter of the coil protrusion 7c of each lower coil conductor 7 so that the outer insulator 5
Is mounted on the end face of the coil end 7b, and then a predetermined number of upper coil conductors 8 are assembled to the armature core 3. As shown in FIG. 9, the outer insulator 5 is provided with a plurality of fitting grooves 5 b on the inner peripheral edge of the hollow portion, and these fitting grooves 5 b
c.

[0003]

However, the outer insulator 5 is provided with the coil protrusion 7 of the lower coil conductor 7 during high-speed rotation.
In order to prevent the radial extension of the coil protrusion 7c from radially outward due to the centrifugal force, the radial outer peripheral surface of the coil protrusion 7c and the fitting groove 5b are restricted.
(A distance y from the center of the armature core 3 shown in FIG. 15 to the radial outer circumferential surface of the coil protrusion 7c and a center of the outer insulator 5 shown in FIG. 9). (The difference from the distance Y from the outer peripheral surface of the fitting groove 5b in the radial direction) is set. In order to position the coil protrusion 7c in the circumferential direction, the coil protrusion 7 shown in FIG.
Also, only a small clearance is set between the circumferential width x of c and the circumferential width X of the fitting groove 5b shown in FIG. For this reason, it was very difficult to insert the outer insulator 5 into the outer diameter of the coil protrusion 7c.

It is also conceivable that each coil projection 7c is radially reduced in diameter from the outer periphery in the radial direction, and the outer insulator 5 is inserted into the outer diameter of the coil projection 7c with the clearance increased. However, in this case, the coil protrusion 7
c is not positioned in the circumferential direction, so that the outer insulator 5 is inserted into the outer diameter of the coil protrusion 7c while the fitting groove 5b of the outer insulator 5 and the coil protrusion 7c are displaced in the circumferential direction. Then, when the coil projection 7c whose diameter has been reduced is returned to the outside in the radial direction, the coil projection 7c is
There is a possibility that the outer insulator 5 may be cracked or chipped due to interference with the corners of b. Alternatively, the coil protrusion 7c may be deformed by interference with the outer insulator 5.
The present invention has been made based on the above circumstances, and has an object to prevent cracking or chipping of a disk-shaped insulator (outer insulator) or deformation of a coil protrusion. It is another object of the present invention to provide an assembling method and an assembling apparatus for a disc-shaped insulator which can easily insert the disc-shaped insulator into an outer diameter of a coil protrusion.

[0005]

According to a first aspect of the present invention, there is provided an apparatus for assembling a disk-shaped insulator, comprising: an armature holding means for holding an armature core on both sides of a rotating shaft; and an armature core. Positioning means for circumferentially positioning the group of coil protrusions of the plurality of lower coil conductors provided, diameter reducing means for reducing the diameter of the group of coil protrusions positioned in the circumferential direction radially inward, a fitting groove and a coil. Insulator inserting means for inserting a disc-shaped insulator from the axial direction into the outer diameter of the coil projecting portion group reduced in diameter in the radial direction with the circumferential position being aligned with the projecting portion. . According to this assembling apparatus, by reducing the diameter inward in the radial direction with each coil protrusion positioned in the circumferential direction, the circumferential direction between the coil protrusion of the lower coil conductor and the fitting groove of the disc-shaped insulator is reduced. A large clearance between the coil protrusion and the fitting groove can be ensured in a state where the positions are matched. As a result, after inserting the disk-shaped insulator into the outer diameter of the coil protrusion group, when the coil protrusion group is expanded radially outward and returned to the original state, the corners and the like of the fitting groove may be reduced. The coil protrusion can be securely fitted into the fitting groove without interfering with the coil protrusion.

The positioning means has a guide groove for accommodating the coil protrusion, and the guide groove regulates both side surfaces of the coil protrusion in the circumferential direction. The diameter of the coil protrusion can be reduced radially inward. The diameter reducing means has a pressing means, and the pressing means presses the longitudinal end of the coil side from the outside to the inside in the radial direction, so that the coil protrusion is positioned in the circumferential direction by the positioning means. The group can be reduced radially inward. The insulator inserting means can hold the disc-shaped insulator in a state where the circumferential positions of the coil protrusion and the fitting groove positioned in the circumferential direction by the guide groove are aligned. Accordingly, if the disk-shaped insulator is moved in the axial direction by this insulator insertion means and inserted into the outer diameter of the coil protrusion group, the circumferential positions of the fitting groove and the coil protrusion are inevitably aligned. Can be.

(3) A disc-shaped insulator assembling apparatus guides a part of a coil projecting portion deviated from a guide groove when positioning a group of coil projecting portions in a circumferential direction by a positioning means. As means for fitting in the groove, there is a positioning rotation means for rotating the positioning means in a predetermined range in the circumferential direction of the armature core. Thus, some of the coil protrusions that are not in the guide groove can be reliably accommodated in the guide groove, and all the coil protrusions (coil protrusion group) can be positioned by the positioning means.

According to a fourth aspect of the present invention, there is provided a method for assembling a disk-shaped insulator to an armature core by the assembling apparatus according to the first or second aspect, wherein the coil projecting portion group is positioned in the circumferential direction by the positioning means. Thereafter, the coil protrusion group is reduced in diameter in the radial direction by the diameter reducing means, and then, in a state where the circumferential positions of the fitting groove and the coil protrusion are aligned, the insulator insertion means is used to reduce the diameter inward. Inserting a disk-shaped insulator into the outer diameter of the group of coil protrusions whose diameter has been reduced, and then canceling the action of the diameter reducing means and expanding the group of coil protrusions radially outward to project the coil It is characterized in that each of the groups of units is fitted into a fitting groove. According to this assembling method, when the disk-shaped insulator is inserted into the outer diameter of the group of coil protrusions, and the diameter of the group of coil protrusions is expanded to the outside in the radial direction and returned to the original state, the fitting groove is formed. The coil protrusion can be securely fitted into the fitting groove without the corners and the like interfering with the coil protrusion.

According to a fifth aspect of the present invention, there is provided a method for assembling a disk-shaped insulator on an armature core by the assembling apparatus according to the third aspect, wherein the positioning means is used to position a group of coil protrusions in a circumferential direction. By rotating the positioning means within a predetermined range by the positioning rotation means, a part of the coil projecting portion deviating from the guide groove can be accommodated in the guide groove. Accordingly, all the coil protrusions (coil protrusion groups) are accommodated in the guide grooves, so that the circumferential position of the coil protrusions can be regulated.

According to the assembling apparatus of the present invention, while the armature core is being rotated, the coil projecting portion regulating means regulates the radial position of the coil projecting portion while rotating the armature core. By pressing the disc-shaped insulator held by the pressing means in the axial direction against the coil protrusion in a posture inclined at a predetermined angle, the coil protrusions are sequentially fitted into the fitting grooves, and the coil protrusions are A disk-shaped insulator can be inserted into the outer diameter of the unit group. Accordingly, all the coil protrusions can be securely fitted into the fitting grooves without the corners of the fitting grooves interfering with the coil protrusions.

Further, as described in claim 9, before assembling one of the disc-shaped insulators, the other disc-shaped insulator is previously inserted into the outer periphery of the other coil projecting portion group. (However, in this case, the coil protrusions are not fitted in the fitting grooves), so that at the time each one coil protrusion is fitted in each fitting groove of one disk-shaped insulator, Since the other coil projection is inevitably positioned, the other coil projection is fitted into each fitting groove of the other disc-shaped insulator, and the outer diameter of the other coil projection group is The outer insulator can be reliably inserted.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings. (First Embodiment) FIG. 1 is a sectional view of an insulator assembling apparatus. This embodiment is applied to, for example, an armature (armature) 1 of a starter motor shown in FIG. The armature 1 includes a rotating shaft 2, an armature core 3, an armature coil (to be described later), and disk-shaped insulators 4, 5, and the like. Armature core 3
Is formed by laminating a plurality of core sheets,
And is provided so as to be rotatable integrally with the rotating shaft 2 by fitting to the outer periphery of the rotating shaft 2. The outer peripheral portion of the armature core 3 has a predetermined number (for example, 2
Five slots 6 (see FIG. 7) are respectively recessed along the axial direction, and the slots 6 are provided at equal pitches in the circumferential direction of the armature core 3.

The armature coil is composed of lower coil conductors 7 and upper coil conductors 8 as many as the number of slots 6, respectively. The lower coil conductor 7 and the upper coil conductor 8 are each formed into a predetermined shape described below using pure copper or pure aluminum having a low electric resistance as a material. As shown in FIG. 8, the lower coil conductor 7 has a linear coil side 7.
a, a pair of coil ends 7b extending substantially perpendicularly to the coil side 7a from both ends of the coil side 7a, and a pair extending substantially perpendicularly to the opposite side of the coil side 7a from the tip of each coil end 7b. And a pair of coil end portions 7b are provided at a predetermined angle to the opposite sides with respect to the coil side 7a (see FIG. 8B). As shown in FIG. 6, the lower coil conductor 7 has the coil side 7a inserted into the slot 6 via the lower-layer slot insulating paper 9 (see FIG. 7), and the two coil ends 7b are connected to the armature core 3 respectively. The armature core 3 is assembled to the armature core 3 in a state of extending toward the rotation shaft 2 substantially in parallel with the end face of the armature.

The upper coil conductor 8 has a linear coil side 8
a, a pair of coil ends 8b extending substantially perpendicularly to the coil side 8a from both ends of the coil side 8a, and a pair extending substantially perpendicularly to the side opposite to the coil side 8a from the tip of each coil end 8b. And a pair of coil end portions 8b are provided at a predetermined angle to the opposite sides with respect to the coil side 8a. This upper coil conductor 8
As shown in FIG. 6, the coil side 8a is inserted outside the lower layer coil side 7a in the slot 6 via the upper layer side slot insulating paper 10 (see FIG. 7), and both coil ends 8b are respectively connected to the lower layer coil. The armature core 3 is assembled to the armature core 3 with the outside of the end 7b extending substantially parallel to the rotation shaft 2 side. In addition,
The overall shape of the upper coil conductor 8 is substantially the same as that of the lower coil conductor 7 shown in FIG. 8, but a brush (not shown) slides on one end (right side in FIG. 6) of the coil end 8b. It is formed as a moving commutator side.

The disk-shaped insulators 4, 5 are interposed between the end face of the armature core 3 and the coil end 7b of the lower coil conductor 7 to insulate them from each other. It comprises a pair of outer insulators 5 interposed between the coil end 7b of the coil conductor 7 and the coil end 8b of the upper coil conductor 8 to insulate them. The inner insulator 4 has a rotating shaft 2 at the center.
And has a round hole 4a large enough to fit into the outer diameter of the armature core 3. The lower layer coil conductor 7 is attached to both end faces of the armature core 3 through the rotary shaft 2 through the round hole 4a from the axial direction before assembling the lower coil conductor 7 to the armature core 3. Is done. The outer insulator 5 (5A, 5B) has a round hole 5a in the center part that can be fitted to the outer diameter of the lower coil protrusion 7c, and after assembling the lower coil conductor 7 to the armature core 3 (upper layer). Before assembling the coil conductor 8), the coil conductor 8 is assembled by the insulator assembling apparatus 11 described below. As shown in FIG. 9, a plurality of fitting grooves 5 are provided on the inner peripheral edge of the round hole 5a.
b are provided at an equal pitch over the entire circumference.

(Description of Insulator Assembling Apparatus 11) As shown in FIG. 1, the insulator assembling apparatus 11 has a set of centers 12, which hold the armature core 3 by sandwiching both end faces of the rotating shaft 2 from both sides. A set of coil guides 13 fitted on the outer periphery of the center 12, a set of pushers 14 fitted on the outer periphery of the coil guide 13, and a coil protrusion of the lower coil conductor 7 assembled on the armature core 3 7c is constituted by a diameter reducing unit (described below) for radially reducing the diameter of 7c. The center 12 is driven by an actuator (not shown) to be movable in the axial direction (the direction of the arrow in FIG. 1).

The coil guide 13 is provided so as to be slidable in the axial direction (the direction of the arrow in FIG. 1) on the outer peripheral surface of the center 12 by an actuator (not shown) driven separately from the center 12. A plurality of guide grooves 13a are recessed along the axial direction on the outer peripheral surface of the coil guide 13, and the respective guide grooves 13a are provided at equal pitches in the circumferential direction. As shown in FIG. 2, the guide grooves 13a are formed by fitting the coil protrusions 7c of the respective lower coil conductors 7 assembled to the armature core 3 so as to regulate both side surfaces of the coil protrusions 7c. Direction. However, guide groove 1
Reference numeral 3a denotes a state where the lower coil conductor 7 is assembled to the armature core 3, and as shown in FIG. 3, a predetermined gap s is provided between the radial inner peripheral end of the coil protrusion 7c and the bottom surface of the guide groove 13a.
Is formed to a depth of about h. Pusher 1
4 is a coil guide 1 by an actuator (not shown).
3 is provided so as to be slidable in the axial direction (the direction of the arrow in FIG. 1), and holds the outer insulators 5A and 5B on the end faces facing the armature core 3 in the axial direction, respectively. In addition, the pusher 14 is provided with the guide groove 13 a of the coil guide 13 and the fitting groove 5.
The outer insulator 5A with the circumferential position of
5B can be held.

The reduced diameter unit includes a reduced diameter claw 15 for pressing one end of the lower layer coil side 7a inserted into the slot 6 of the armature core 3 from radially outward to inward;
An actuating device (described below) for operating the reduced diameter claw 15 in the radial direction is provided. The reduced diameter claw 15 is prepared for each slot 6 of the armature core 3, and is radially inserted into a through hole 16 a (see FIG. 5) of a holding ring 16 arranged on the outer periphery of the armature core 3. As shown in FIG. 5, the actuating device includes a movable disk (not shown) having a cam groove 17, an actuator (not shown) for applying a rotating force to the movable disk, and a movable disk disposed in parallel with the movable disk so as to face the movable disk. Fixed disk 1
8. It is composed of a pressing arrow 19 for pressing the reduced diameter claw 15 and the like.

The cam groove 17 formed in the movable disk is formed in a substantially scroll shape in which the curvature gradually decreases from the outer peripheral side toward the inner peripheral side in the radial direction. Fixed disk 1
8 has a plurality of radially extending guide holes 18a (the same number as the number of the slots 6). Pressing arrow 19
Has a slide portion 20 provided to be slidable in the radial direction of the fixed disk 18 while being guided by the guide hole 18a,
It is provided so as to protrude from the slide portion 20 in a rod shape in the inner diameter direction. A cam follower 21 having a circular planar shape is fixed to the slide portion 20 by a screw 22 or the like.
The movable disk is fitted in the cam groove 17 so as to be movable in the cam groove 17. When the movable disk is stationary, the cam follower 21 moves the cam groove 1 as shown in FIG.
7 is located at the outer diameter side end.

Next, a method of assembling the outer insulators 5A and 5B by the insulator assembling apparatus 11 will be described. First, the coil side 7a is inserted into each slot 6 of the armature core 3 to assemble all lower coil conductors 7. Next, both centers 12
The armature core 3 is held by sandwiching both end surfaces of the rotating shaft 2 with. At this time, the armature core 3 is positioned in the circumferential direction so as not to rotate. Next, the one coil guide 13 is moved along the outer peripheral surface of the center 12 by the actuator, and the one coil protrusion 7c is fitted into the guide groove 13a to regulate the circumferential position of each coil protrusion 7c.

Next, the diameter reducing claw 15 of the diameter reducing unit
One end of the coil side 7a protruding from the slot 6 (the right end in FIG. 1 / the radially outer end of the one coil end 7b) is pressed. Specifically, when the movable disk is rotated by the actuator, the cam follower 21 moves inside the cam groove 17 of the movable disk toward the inner diameter side, so that the slide portion 20 to which the cam follower 21 is fixed also moves to the guide hole 18a of the fixed disk 18. To the inner diameter side. As a result, when the pressing arrow 19 provided with the slide portion 20 moves in the inner diameter direction, the pressing arrow 19 pushes out the reduced diameter claw 15 incorporated in the holding ring 16, and the reduced diameter claw 15 is moved to the coil side 7.
One end of a is pressed radially inward.

As a result, the one coil end 7b moves radially inward along the end face of the armature core 3, and with the movement of the coil end 7b, the one coil protrusion 7c moves into the guide groove 13a. The inside is pushed radially inward to reduce the diameter (see FIG. 4). In this state (when one of the coil protrusions 7c is reduced in diameter), the actuator pushes out one pusher 14 in the axial direction, and the round hole 5a of the outer insulator 5A held on the end face of the pusher 14 is pushed. Is inserted into the outer periphery of the group of coil protrusions 7c. Thereafter, the diameter reduction claw 15 is moved radially outward by the actuator, and the coil side 7 is moved.
The pressing force applied to a is released. As a result, one of the coil projecting portions 7c expands radially outward and fits into the fitting groove 5b of the outer insulator 5A.

Next, for the reduced diameter unit, both centers 1
The armature core 3 held at 2 is moved in the axial direction, and the other end of the coil side 7 a is arranged radially inside the reduced diameter claw 15. Thereafter, a round hole 5a of one outer insulator 5A is formed.
Is inserted into the outer diameter of the other coil insulator 7B, and the other outer insulator 5B is assembled by inserting the round hole 5a of the other outer insulator 5B into the outer diameter of the other coil insulator 7B in the same manner as in the step of inserting . After assembling both outer insulators 5A and 5B, the position where armature core 3 is first set (position shown in FIG. 1)
And pusher 14, coil guide 13, center 1
The armature core 3 is detached in the order of 2. By the series of operations described above, the assembly of both outer insulators 5A and 5B is completed.

(Effect of the First Embodiment) In the assembling method using the insulator assembling apparatus 11 of the present embodiment, each coil protrusion 7
c in which both side surfaces are regulated by the guide groove 13a (that is, a state in which each coil protrusion 7c is positioned in the circumferential direction).
In order to further reduce the diameter of each coil protrusion 7c inward in the radial direction by the diameter reducing unit, the coil protrusion 7c is
A large radial clearance between the coil protrusion 7c and the fitting groove 5b can be ensured in a state where the circumferential position is aligned with the fitting groove 5b. As a result, when the outer insulator 5 is inserted into the outer periphery of the group of coil protrusions 7c and then the group of coil protrusions 7c is radially expanded and returned to the original state, the corners of the fitting groove 5b and the like are removed. Can reliably fit the coil protrusion 7c into the fitting groove 5b without interfering with the coil protrusion 7c.
Can be inserted into the outer diameter of the group of coil protrusions 7c.
Thereby, at the time of assembling the outer insulator 5, it is possible to prevent the outer insulator 5 from being cracked or chipped, or to prevent the coil protrusion 7c from being deformed.

(Modification) In this embodiment, the diameter reducing claw 15 is operated by the operating device shown in FIG. 5, but a method of simultaneously reducing the diameter by a plurality of actuators from the outer peripheral direction may be used. Further, both outer insulators 5A and 5B are assembled one by one.
The outer insulator 5
A and 5B may be assembled at the same time. The core holding means of the present embodiment is configured to hold the armature core 3 by sandwiching the rotating shaft 2 from both sides at the center 12.
A structure that rotatably holds the outer diameter of the rotating shaft 2 may be used.

(Second Embodiment) FIG. 10 is a sectional view of an insulator assembling apparatus. In this embodiment, when positioning the group of the coil protrusions 7c by the guide grooves 13a of the coil guide 13 described in the first embodiment, some of the coil protrusions 7c are not positioned off the guide grooves 13a. This shows an example in which a coil guide rotation unit 33 is added as a means for solving the problem. Since the insulator assembling apparatus 11 described in the first embodiment can be used for components other than the coil guide rotation unit 33, description of components other than the coil guide rotation unit 33 is omitted.

The coil guide rotating unit 33 is shown in FIG.
As shown in the figure, an actuator 34 for driving the coil guide 13 and an output shaft 3 of the actuator 34
A transmission pusher 35 provided in 4a is provided, and the coil guide 13 can be rotated and oscillated via a shaft 36 engaged with the transmission pusher 35. The actuator 34 has an output shaft 34a as shown by an arrow A in FIG.
Can reciprocate (advance and retreat). Transmission pusher 3
Reference numeral 5 includes a pair of engaging plates facing each other at a predetermined interval, which are orthogonal to the output shaft 34a. Shaft 36
Is provided to extend radially outward of the coil guide 13, and the distal end is inserted between a pair of engagement plates forming the transmission pusher 35. The distal end of the shaft 36 is formed in a substantially spherical shape so as to follow the movement of the transmission pusher 35. The coil guide rotation unit 33 having the above-described configuration is used for the output shaft 3 of the actuator 34.
When the transmission pusher 35 moves, the transmission pusher 35 moves integrally with the output shaft 34a, and the shaft 36 follows the movement of the transmission pusher 35, as shown by an arrow B in FIG.
The coil guide 13 can be rotationally oscillated in a predetermined oscillating range with the center 12 as the center of rotation.

Next, the operation of the coil guide rotating unit 33 will be mainly described. After assembling all the lower coil conductors 7 on the armature core 3, the armature core 3 is held by sandwiching both end surfaces of the rotating shaft 2 between the two centers 12. Next, one of the coil guides 13 is driven by an actuator (not shown).
Is moved along the outer peripheral surface of the center 12, and one of the coil protrusions 7 c is fitted into the guide groove 13 a of the coil guide 13. At this time, all the coil protrusions 7c do not always fit in the guide grooves 13a at a time. That is, as shown in FIG. 11, a case where some of the coil protrusions 7c1 come off from the guide grooves 13a may occur. Therefore, after moving one of the coil guides 13 along the outer peripheral surface of the center 12, the coil guide 13 is rotated and oscillated in a predetermined oscillating range by the coil guide rotating unit 33. This coil guide 1
Due to the rotational swing motion of 3, some of the coil protrusions 7c1, which have been removed from the guide groove 13a, fall within the guide groove 13a, so that all the coil protrusions 7c can be positioned.

Thereafter, as in the first embodiment, one end (right end in FIG. 10) of the coil side 7a protruding from the slot 6 is pressed, whereby the one coil protruding portion 7c is pressed.
Is pushed radially inward in the guide groove 13a to reduce the diameter. In this state, one pusher 14 is pushed out from the axial direction, and the round hole 5a (see FIG. 9) of the outer insulator 5A held on the end face of the pusher 14 is inserted into the outer periphery of the group of coil protrusions 7c. Thereafter, by moving the diameter-reducing claw 15 radially outward to release the pressing force applied to the coil side 7a, one of the coil projecting portions 7c expands radially outward, and the outer insulators respectively extend. 5A is fitted into the fitting groove 5b. Thus, the assembly of the outer insulator 5A is completed.

(Effect of the Second Embodiment) In this embodiment, the coil protrusion 13c is formed by the guide groove 13a of the coil guide 13.
When positioning the group, the coil guide rotation unit 33
This causes the coil guide 13 to rotate and swing within a predetermined swing range. As a result, a part of the coil protrusions 7c1, which are deviated from the guide groove 13a, can be accommodated in the guide groove 13a, and all the coil protrusions 7c (coil protrusion group).
Can be reliably restricted by the guide groove 13a.

(Third Embodiment) FIG. 12 is a sectional view of an insulator assembling apparatus 23. Insulator assembly device 23 of this embodiment
As shown in FIG. 12, a guide base plate 24 constituting a base member of the apparatus, a tip alignment plate 25 for regulating a radial position of one coil protrusion 7c of the lower coil conductor 7 assembled on the armature core 3 An insulator guide plate 26 that holds one outer insulator 5A on the outside of the one coil protrusion 7c in the axial direction, and attaches the outer insulator 5A held by the insulator guide plate 26 to one side (right side in FIG. 12). It is composed of a movable plate 27 and the like for further supporting.

The guide base plate 24 is provided with a substantially L-shaped cross section, and has a shaft support 24a which is opened in a U-shape at the center of the upper end. The outer periphery of the other end of the rotary shaft 2 is formed by the shaft support 24a. It is rotatably supported. One end of the plate 24 extends under the held armature core 3 to one end of the armature core 3, and its axial end surface is slightly axially outside the one end side end surface of the armature core 3. It is located in. In addition, on the inside (right side of FIG. 12) of the shaft support portion 24a,
A thrust bearing 28 that receives a thrust-direction force applied to the armature core 3 is provided. Tip alignment plate 25
Is disposed adjacent to the axial end face of the guide base plate 24, and an opening that opens in a substantially V shape is provided on the upper side of the plate 25. This opening is, as shown in FIG.
It has an introduction portion 25a for introducing the radial outer peripheral end of the coil protrusion 7c with the rotation of the armature core 3, and a guide portion 25b for regulating the radial position of the introduced coil protrusion 7c. The guide portion 25b is formed by an arcuate surface that can slightly reduce the diameter of the coil protrusion 7c inward in the radial direction, and the introduction portion 25a is provided so as to open from an arbitrary position in the tangential direction of the guide portion 25b.

The insulator guide plate 26 is fixed to the guide base plate 24 by screws 29 and the like with the leading end alignment plate 25 interposed between the insulator guide plate 26 and the guide base plate 24. This insulator guide plate 26 includes
As shown in FIG. 13, an opening that opens in a U-shape is provided on the upper side of the plate 26, and the outer diameter of the outer insulator 5A is held by a guide portion 26a of this opening. Note that the guide portion 26a is provided in an arc shape substantially the same as the outer diameter of the outer insulator 5A. The movable plate 27 is disposed outside the insulator guide plate 26 in the axial direction (right side in FIG. 12), and is provided so as to be able to advance and retreat in the axial direction along the guide shaft 30 with respect to the guide base plate 24. And an adjustment screw 31 which is screwed to the guide base plate 24 through the front end aligning plate 25 so as to adjust the axial position. The guide shaft 3
0 are arranged on both sides of the adjusting screw 31 as shown in FIG. 14 to guide the movement of the movable plate 27,
The rotation of the movable plate 27 is regulated.

As shown in FIG. 14, the movable plate 27 is provided with a shaft support portion 27a which is opened in a U-shape at the center of the upper end, and the shaft support portion 27a allows the outer peripheral surface of one end of the rotary shaft 2 to be rotatable. I support it. Further, the movable plate 27 is provided with four pressing elastic bodies 32 (for example, spring plungers) around the shaft support 27a. The pressing elastic body 32 supports the outer insulator 5A held by the insulating guide plate 26 from one side, and in this embodiment, adjusts the spring load of each pressing elastic body 32 to project the plunger 32a. Figure 1 by changing the length
As shown in FIG. 2, the outer insulator 5A is supported in a posture inclined at a predetermined angle. Specifically, the projecting length of the plunger 32a of the pressing elastic body 32A (see FIG. 14) provided at a position substantially close in the circumferential direction to a portion where the leading end alignment plate 25 transitions from the introduction portion 25a to the guide portion 25b is the maximum. It is set to be.

Next, a method of assembling the outer insulator 5A by the insulator assembling apparatus 23 will be described. First, a round hole 5a of the other outer insulator 5B is inserted in advance into the outer diameter of the other coil protrusion 7c group of each lower coil conductor 7 assembled on the armature core 3. However, at this time, the coil protrusion 7c and the fitting groove 5b of the outer insulator 5B are not fitted.
That is, the round hole 5a of the outer insulator 5B is inserted in the outer periphery of the outer coil 5B in a state where the other coil protrusion 7c is not positioned. Next, the rotation shaft 2 is formed by the shaft support portion 24a of the guide base plate 24 and the shaft support portion 27a of the movable plate 27.
Rotatably support the outer peripheral surfaces of both ends of the lower coil conductor 7.
The armature core 3 assembled as above is set in the apparatus.

Next, while the armature core 3 is rotating in a predetermined direction (counterclockwise rotation in FIG. 13), the movable plate 27 is advanced to the armature core 3 side by the adjusting screw 31, and the insulator guide plate 26 Outer insulator 5 held in
A is moved to the armature core 3 side, and the movable plate 27 is stopped at a position where a part of the inclined outer insulator 5A abuts the coil protrusion 7c and slightly presses the coil protrusion 7c in the axial direction. (The state shown in FIG. 12). In this case, the armature core 3 may be rotated after the movable plate 27 is advanced. The armature core 3 may be rotated at a constant speed by an actuator (not shown), or may be rotated manually.

When the armature core 3 rotates, when the coil projecting portion 7c moves along the guide portion 25b after coming into contact with the oblique side of the introduction portion 25a of the tip aligning plate 25, the guide portion 25b has an arc shape. Following this, the position of the coil projecting portion 7c in the radial direction is regulated in a slightly reduced diameter state. At the same time, a part of the outer insulator 5A is pressed by the pressing elastic body 32 against the coil protrusion 7c (the coil protrusion 7c passing through the part of the leading end alignment plate 25 that transitions from the introduction part 25a to the guide part 25b). , One coil protrusion 7
When c fits into the fitting groove 5b of the outer insulator 5A, the outer insulator 5A rotates together with the coil protrusion 7c, so that the coil protrusions 7c are sequentially fitted into the fitting groove 5b. The outer insulator 5A is inserted into the outer diameter of the coil protrusion 7c group. When the outer insulator 5A is inserted into the outer diameter of one of the coil protrusions 7c, the other coil protrusions 7c are inevitably positioned, so that the other outer insulator that has been roughly inserted until then is positioned. Each coil protrusion 7c is fitted into each fitting groove 5b of 5B, and the outer insulator 5B is reliably inserted into the outer diameter of the other coil protrusion 7c group.

(Effect of Third Embodiment) According to the assembling method using the insulator assembling apparatus 23 of the present embodiment, the coil protrusion 7c is securely fitted without the corners of the fitting groove 5b interfering with each other. The coil protrusion 7c can be fitted into the groove 5b. As a result, similarly to the first embodiment, at the time of assembling the outer insulator 5, the outer insulator 5 can be prevented from being cracked or chipped, or the coil protrusion 7c from being deformed. In this embodiment, when the outer insulator 5A is inserted into the outer diameter of one of the coil protrusions 7c, the other coil protrusions 7c are interlocked.
Since the outer insulator 5B is also inserted into the outer diameter of the group c, the time required for the assembling process can be reduced as compared with a case where the outer insulators 5A and 5B are alternately assembled one by one.

(Modification) In this embodiment, before the outer insulator 5A is inserted into the outer diameter of one of the coil projections 7c, the outer insulator 5 is roughly adjusted to the outer diameter of the other coil projection 7c in advance. 5B, the outer insulator 5A is inserted into the outer diameter of one coil projection 7c group, and then the outer insulator 5B is inserted into the outer diameter of the other coil projection 7c group in the same manner. May be. The iron core holding means shown in the third embodiment has a structure in which the outer periphery of the rotary shaft 2 is held by the shaft supports 24a and 27a. As described in the first and second embodiments,
A structure may be adopted in which both end surfaces of the rotating shaft 2 are sandwiched and held from both sides.

[Brief description of the drawings]

FIG. 1 is a sectional view of an insulator assembling apparatus (first embodiment).

FIG. 2 is an axial front view showing a step of assembling an outer insulator.

FIG. 3 is a plan view showing a positional relationship between a guide groove and a coil protrusion.

FIG. 4 is a plan view showing a positional relationship between a guide groove and a coil protrusion.

FIG. 5 is a partially enlarged view showing a configuration of a diameter reducing unit.

FIG. 6 is a half sectional view of the armature.

FIG. 7 is an exploded perspective view of the armature.

8A is a side view of a lower coil conductor, FIG. 8B is a view A of FIG. 8A, and FIG. 8C is a view B of FIG.

FIG. 9 is a half plan view of an outer insulator.

FIG. 10 is a sectional view of an insulator assembling apparatus (second embodiment).

FIG. 11 is an operation explanatory view of the second embodiment (second embodiment).

FIG. 12 is a sectional view of an insulator assembling apparatus (third embodiment);

FIG. 13 is an axial front view showing the shapes of the opening of the tip alignment plate and the opening of the insulator guide plate.

FIG. 14 is an axial front view of the insulator assembling apparatus as viewed from a movable plate side.

FIG. 15 is an axial front view showing a circumferential width of a coil protrusion.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Armature 2 Rotating shaft 3 Armature core 5 Outer insulator (disc-shaped insulator) 5b Fitting groove 6 Slot 7 Lower coil conductor 7a Coil side 7b Coil end 7c Coil protrusion 11 Insulator assembly device (first Example) 12 Center (iron core holding means) 13 Coil guide (positioning means) 13a Guide groove 14 Pusher (insulator inserting means) 15 Reduced diameter claw (reduced diameter means) 23 Insulator assembling apparatus (second embodiment) 24a shaft Supporting part (core holding means) 25 Tip aligning plate (coil protrusion regulating means) 25a introduction part 25b guide part (coil guide part) 26 insulator guide plate (insulator holding means) 26a guide part (insulator guide part) 27 movable Plate (insulator inserting means) 27a Shaft support (iron core holding means) 32 Pressing elastic body (pressing means) 33 Coil guide rotating unit (Positioning rotating means)

Claims (11)

[Claims] 1. An armature core having a plurality of slots on its outer periphery, a rotating shaft supporting the armature core, a linear coil side, and extending substantially perpendicular to the coil side from both ends of the coil side. A pair of coil ends, a pair of coil protrusions extending from the tip of each coil end to the opposite side of the coil side at a substantially right angle, the coil side being inserted into the slot and assembled to the armature core A plurality of lower-layer coil conductors, and provided in a hollow disk shape having a plurality of fitting grooves on an inner peripheral edge thereof,
An armature of a rotating electrical machine, wherein the fitting groove is fitted to the coil protrusion and is mounted on an axial end surface of the coil end. An assembling apparatus for a disc-shaped insulator, wherein the disc-shaped insulator is inserted into an outer diameter of the coil protrusion group after being assembled to an armature core, wherein the armature core is held on both sides of the rotating shaft. Core holding means, positioning means for circumferentially positioning a group of coil protrusions of the plurality of lower coil conductors assembled on the armature core, radially inward of the group of coil protrusions positioned circumferentially. A diameter reducing means for reducing the diameter of the coil protrusions from the axial direction to the outer diameter of the group of coil protrusions which are radially reduced inward in a state where the circumferential positions of the fitting groove and the coil protrusions are aligned. Insulator insertion for inserting the disc-shaped insulator Assembly device of the disc-shaped insulator, wherein a and a stage. 2. The positioning means has a guide groove for accommodating the coil protrusion, and the guide groove regulates both side surfaces of the coil protrusion in the circumferential direction. A pressing means for pressing an end in a longitudinal direction of the side from a radially outer side to an inner side, wherein the insulator inserting means is configured such that the insulating groove is formed in the fitting groove with respect to the coil protrusion positioned in the circumferential direction. The apparatus for assembling a disc-shaped insulator according to claim 1, wherein the disc-shaped insulator is held in a state where the positions are aligned in a circumferential direction. 3. A positioning device according to claim 1, wherein said positioning means includes means for positioning a part of said coil projecting portions which are not in said guide groove in said guide groove when positioning said coil projecting portion group in a circumferential direction. 3. The apparatus for assembling a disk-shaped insulator according to claim 2, further comprising positioning / rotating means for rotating the positioning means in a predetermined range in a circumferential direction of the armature core. 4. A method of assembling the disc-shaped insulator on the armature core by the assembling apparatus according to claim 1 or 2, further comprising: after positioning the group of coil protrusions in the circumferential direction by the positioning means. The diameter of the coil projecting portion group is reduced radially inward by the diameter reducing device. Subsequently, with the circumferential position of the fitting groove and the coil projecting portion aligned, the insulator inserting device is used. The disk-shaped insulator is inserted into the outer diameter of the coil protrusion group which is reduced in diameter in the radial direction, and then the action of the diameter reducing means is released to move the coil protrusion group outward in the radial direction. A method of assembling a disk-shaped insulator, wherein the coil protrusions are fitted into the fitting grooves by expanding the diameter of the coil-shaped insulator. 5. A method for assembling the disc-shaped insulator on the armature core by the assembling apparatus according to claim 3, wherein the positioning means is configured to position the group of coil protrusions in a circumferential direction. By rotating the positioning means in a predetermined range by the positioning rotation means, a part of the coil protrusions deviating from the guide grooves is accommodated in the guide grooves and the circumferential position of the coil protrusion group is adjusted. After the restriction, the diameter of the coil protrusion group is reduced inward in the radial direction by the diameter reducing means. Subsequently, the insulator is aligned with the circumferential position of the fitting groove and the coil protrusion being adjusted. The insertion means inserts the disc-shaped insulator into the outer diameter of the coil protrusion group reduced in diameter in the radial direction, and then releases the action of the diameter reduction means to remove the coil protrusion group. Expand radially outward A method of assembling a disc-shaped insulator, wherein the coil protrusion groups are respectively fitted in the fitting grooves. 6. An armature core having a plurality of slots on the outer periphery, a rotating shaft supporting the armature core, a linear coil side, and extending substantially perpendicularly to the coil side from both ends of the coil side. A pair of coil ends, a pair of coil protrusions extending from the tip of each coil end to the opposite side of the coil side at a substantially right angle, the coil side being inserted into the slot and assembled to the armature core A plurality of coil conductors, provided in a hollow disk shape having a plurality of fitting grooves on the inner peripheral edge,
An armature of a rotating electrical machine, wherein the fitting groove is fitted to the coil protrusion and is mounted on an axial end surface of the coil end. An assembling apparatus for a disc-shaped insulator, wherein the disc-shaped insulator is inserted into an outer diameter of the group of coil protrusions after being assembled to an armature core, the core holding the armature core to be rotatable. Means, an insulator holding means for rotatably holding the disc-shaped insulator at an axially outer side of the armature core, and a radially outer peripheral end of the coil protrusion with the rotation of the armature core. A coil protrusion regulating means for regulating the radial position of the coil protrusion along the coil guide, and a disk held by the insulator holding means; Support in a posture inclined at a predetermined angle And an insulator insertion means having a pressing means for pressing the disc-shaped insulator against the coil protrusion from the axial direction by an elastic force. apparatus. 7. An apparatus for assembling a disc-shaped insulator according to claim 6, wherein said insulator holding means has an insulator guide having an arc substantially the same as the outer diameter of said disc-shaped insulator. An apparatus for assembling a disc-shaped insulator, wherein the disc-shaped insulator is rotatably held along the insulator guide portion. 8. The apparatus for assembling a disk-shaped insulator according to claim 6, wherein the coil protrusion regulating means has an introduction portion for introducing the coil protrusion, and the introduction portion is located at an arbitrary position. A disc-shaped insulator assembling device, wherein the device is provided so as to open in a tangential direction of the coil guide portion. 9. The apparatus for assembling a disk-shaped insulator according to any one of claims 6 to 8, wherein in the insulator insertion means, the pressing means is provided at a plurality of positions in a circumferential direction of the disk-shaped insulator. Wherein the largest elastic force is applied to the pressing means provided at a position substantially in the circumferential direction with respect to a portion of the coil projecting portion restricting means from the introduction portion to the coil guide portion. Device for assembling insulators. 10. A method for assembling said disc-shaped insulator on said armature core by using the assembling apparatus according to any one of claims 6 to 9, wherein said coil projecting portion is regulated while rotating said armature core. Means for restricting the radial position of the coil protrusion by means of the means, and rotating the disc-shaped insulator held by the insulator holding means at a predetermined angle by the pressing means with respect to the coil protrusion. By pressing from the direction,
A method for assembling a disk-shaped insulator, wherein the coil-shaped protrusions are sequentially fitted in the fitting grooves, and the disk-shaped insulator is inserted into the outer diameter of the coil-projected portion group. 11. The method for assembling a disc-shaped insulator according to claim 10, wherein when assembling one disc-shaped insulator by the assembling apparatus, the other disc-shaped insulator is previously projected to the other coil. A method of assembling a disc-shaped insulator, comprising: assembling the one disc-shaped insulator after inserting the disc-shaped insulator into an outer periphery of a unit group.